This Is How Chill Girls Dress for a Party

When it comes to celebrities with an effortless sense of style, Sienna Miller takes the cake. The quintessential British cool girl never ceases to impress us with her ability to take something fancy and make it wearable and modern sans fuss. Case in point: Miller attended an exhibition opening in New York this week in a fancy party mini dress and metallic heels. Pretty standard party attire, right? What took it to cool chill-girl territory was the third piece she wore: a maxi-length military coat. That cool on-trend addition, along with her perfectly undone locks, took her outfit from basic to special and proved that a duster coat is the perfect chill partner for a metallic mini dress and heels. Not only that, it makes a party dress infinitely more suitable for chilly temperatures.

A duster coat is a piece that It girls have been throwing on over everything from leggings to denim cutoffs as of late, so it's only natural that this easy piece plays into chill girl's party looks, too. And given that it's the holiday season, you could probably use a new party outfit idea or two, so take note of this one.

Keep scrolling to see Sienna Miller's chill party outfit and shop the look for yourself!